Using Site Recovery
Manager with Admission Control Clusters
You can use
Admission Control on a cluster to reserve resources on the recovery site.
However, using Admission
Control can affect disaster recovery by preventing
Site
Recovery Manager
from powering on virtual machines when running a recovery
plan. Admission Control can prevent virtual machines from powering on if
powering them on would violate the relevant Admission Control constraints.
You can add a command step to a recovery plan to run a
PowerCLI script that deactivates Admission Control during the recovery. See Creating Custom Recovery Steps for
information about creating command steps.
- Create a pre-power on command step in the recovery plan that runs a PowerCLI script to deactivate Admission Control.Get-Cluster cluster_name | Set-Cluster -HAAdmissionControlEnabled:$false
- Create a post-power on command step in the recovery plan to reenable Admission Control after the virtual machine powers on.Get-Cluster cluster_name | Set-Cluster -HAAdmissionControlEnabled:$true
If you deactivate Admission Control during recovery,
you must manually reactivate Admission Control after you perform cleanup following a
test recovery. Deactivating Admission Control might affect the ability of High
Availability to restart virtual machines on the recovery site. Do not deactivate
Admission Control for prolonged periods.